Thill-coupling



ING.

Patented Mar. 18, 1890.

.Y Y M. G. HAW THILL QOUPL (No Model.)

Iov

UNITED STATES PATENT OFFICE.

MADISON G. HAVKBL OF SARATOGA SPRINGS, NEW YORK.

THlLL-COU-PLING.

SPECIFICATION formingpart of 4Leraars Patent No. 423,763, dated March 1s, 1890.

Application filed February 1; 1890. Serial No. 338,900. (No model.)

and useful Improvements in Thill-Couplings;

and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which the same. l

My invention relates to improvements in it appertains to make and use `thill-couplings, and is designed as an improvement on the Letters Patent granted to me January 7, 1S90, No. 419,016. The invenv tion disclosed in said Letters Patent consists,

essentially, in a box having a semi-cylindrical casing forming the bottom thereof, and

Vstationary circular disks, to which said casing is secured, in combination with vdisks pivoted to the stationary disks and having a semi-cylindrical casing provided with a slot to receive the shaft-iron.

g The object of the present invention is to provide means for automatically locking the pivoted disks and their casing when -in a closed position, thereby securelyholding the i shafts in place.

The invention consists in the several novel' features of construction and new combinations of parts hereinafter fully described, and then definitely pointed out in the claims.-

In the accompanying drawings, illustrating the invention, in which similar referencenumerals indicate corresponding parts in all the figures, Figure 1 is a perspective View of a thill-coupling constructed according to my invention applied to a carriage or wagon axle. Fig. 2 is a sectionalview of the same. Fig. 3 isa plan View of the coupling with the shaftiron removed. Fig. 4 is a front view of the same. Fig. 5 is a perspective view of th tool for unlocking the coupling.

VIn the said drawings, the reference-n umeral 1 designates an ordinary wagon' or carriage axle. Y

2 designates'the box for the reception of the cylindrical block 3, secured to the shaftiron 4. This box consists of two circular disks 5 5, connected together by the semi-cylindrical sheet or plate 6, connected to the lower half of the peripheriesof said disks. This box is secured to the clip 7, which may be of any ordinary'construction capable of being secured to the axle'.

To each of the disks 5 are pivoted the disks l0, having secured thereto or formed there- With a semicircular wall or casing 11, provided at one edge with a slot 12. The disks can revolve freely on their pivots, so as to cover and uncover the top of box 2, as desired.

Centrally secured upon the inner side of box 2, near the top thereof, is a semi-cylindrical spring 13, which extends around s'aidbox and its free end is formed with or'bent into a projecting flange or lip 14, which passes through a slot 15 in said boxf It will be seen that as the casing 11 is revolved upon its pivots in the disks 12 theiange or lip 14 will engage with the rear or bottom side thereof and prevent any movement backward, thus securely locking the shafts. In this condition the shaftirons cannot be remved until the said flanged end of the spring is pushed in 'and the casing 11 thus allowed to move back. For the purpose of pushing in the said spring to allow the casing 11 to rotate, I provide the box 2, on the outside thereof, in proximity to the slot 15, With an arm 16, to pass through an aperture 17 in the head 18 of an unlocking-lever 19. This head 18 has a ooncaved face and shoulders 20 on each side thereof, and is used by passing the arm 16 through aperture 17. Then by manipulating said lever one of the shoulders 2O will press upon the iiange or lip of the spring projecting through box 2 and forcev the same in and allow the casing 11 to be ro-A tated. y s

The numeral lvdesignates the shaft-irons, having'cylindrical block or head 3, which fits snugly in box 2.

Having thus described my invention, whatI claim is-' .Y

1. The combination, with the box having a semi-cylindrical casing provided With'a slot 9 and forming the bottom thereof and stationary circular disks, to which said casing is sel cured, of the disks pivoted to said stationary disks, having a semi-cylindrical'casing provided with a slot to receive the shaft-iron,

IOO

having a flanged end projecting through the slot therein, and an arm secured to the outside of said box to receive atooi for depressing said spring, substantially as described.

In testimony whereof I afiix my signatureinpresence of two Witnesses;

c MADISON G. HAWKE.

Vtn'esses:

EDWARD H. HAWKE, WM. HAY BooKEs. 

